tools/perf/tests/hists_output.c

   1 #include "perf.h"
   2 #include "util/debug.h"
   3 #include "util/symbol.h"
   4 #include "util/sort.h"
   5 #include "util/evsel.h"
   6 #include "util/evlist.h"
   7 #include "util/machine.h"
   8 #include "util/thread.h"
   9 #include "util/parse-events.h"
  10 #include "tests/tests.h"
  11 #include "tests/hists_common.h"
  12
  13 struct sample {
  14         u32 cpu;
  15         u32 pid;
  16         u64 ip;
  17         struct thread *thread;
  18         struct map *map;
  19         struct symbol *sym;
  20 };
  21
  22 /* For the numbers, see hists_common.c */
  23 static struct sample fake_samples[] = {
  24         /* perf [kernel] schedule() */
  25         { .cpu = 0, .pid = FAKE_PID_PERF1, .ip = FAKE_IP_KERNEL_SCHEDULE, },
  26         /* perf [perf]   main() */
  27         { .cpu = 1, .pid = FAKE_PID_PERF1, .ip = FAKE_IP_PERF_MAIN, },
  28         /* perf [perf]   cmd_record() */
  29         { .cpu = 1, .pid = FAKE_PID_PERF1, .ip = FAKE_IP_PERF_CMD_RECORD, },
  30         /* perf [libc]   malloc() */
  31         { .cpu = 1, .pid = FAKE_PID_PERF1, .ip = FAKE_IP_LIBC_MALLOC, },
  32         /* perf [libc]   free() */
  33         { .cpu = 2, .pid = FAKE_PID_PERF1, .ip = FAKE_IP_LIBC_FREE, },
  34         /* perf [perf]   main() */
  35         { .cpu = 2, .pid = FAKE_PID_PERF2, .ip = FAKE_IP_PERF_MAIN, },
  36         /* perf [kernel] page_fault() */
  37         { .cpu = 2, .pid = FAKE_PID_PERF2, .ip = FAKE_IP_KERNEL_PAGE_FAULT, },
  38         /* bash [bash]   main() */
  39         { .cpu = 3, .pid = FAKE_PID_BASH,  .ip = FAKE_IP_BASH_MAIN, },
  40         /* bash [bash]   xmalloc() */
  41         { .cpu = 0, .pid = FAKE_PID_BASH,  .ip = FAKE_IP_BASH_XMALLOC, },
  42         /* bash [kernel] page_fault() */
  43         { .cpu = 1, .pid = FAKE_PID_BASH,  .ip = FAKE_IP_KERNEL_PAGE_FAULT, },
  44 };
  45
  46 static int add_hist_entries(struct hists *hists, struct machine *machine)
  47 {
  48         struct addr_location al;
  49         struct perf_evsel *evsel = hists_to_evsel(hists);
  50         struct perf_sample sample = { .period = 100, };
  51         size_t i;
  52
  53         for (i = 0; i < ARRAY_SIZE(fake_samples); i++) {
  54                 const union perf_event event = {
  55                         .header = {
  56                                 .misc = PERF_RECORD_MISC_USER,
  57                         },
  58                 };
  59                 struct hist_entry_iter iter = {
  60                         .ops = &hist_iter_normal,
  61                         .hide_unresolved = false,
  62                 };
  63
  64                 sample.cpu = fake_samples[i].cpu;
  65                 sample.pid = fake_samples[i].pid;
  66                 sample.tid = fake_samples[i].pid;
  67                 sample.ip = fake_samples[i].ip;
  68
  69                 if (perf_event__preprocess_sample(&event, machine, &al,
  70                                                   &sample) < 0)
  71                         goto out;
  72
  73                 if (hist_entry_iter__add(&iter, &al, evsel, &sample,
  74                                          PERF_MAX_STACK_DEPTH, NULL) < 0) {
  75                         addr_location__put(&al);
  76                         goto out;
  77                 }
  78
  79                 fake_samples[i].thread = al.thread;
  80                 fake_samples[i].map = al.map;
  81                 fake_samples[i].sym = al.sym;
  82         }
  83
  84         return TEST_OK;
  85
  86 out:
  87         pr_debug("Not enough memory for adding a hist entry\n");
  88         return TEST_FAIL;
  89 }
  90
  91 static void del_hist_entries(struct hists *hists)
  92 {
  93         struct hist_entry *he;
  94         struct rb_root *root_in;
  95         struct rb_root *root_out;
  96         struct rb_node *node;
  97
  98         if (sort__need_collapse)
  99                 root_in = &hists->entries_collapsed;
 100         else
 101                 root_in = hists->entries_in;
 102
 103         root_out = &hists->entries;
 104
 105         while (!RB_EMPTY_ROOT(root_out)) {
 106                 node = rb_first(root_out);
 107
 108                 he = rb_entry(node, struct hist_entry, rb_node);
 109                 rb_erase(node, root_out);
 110                 rb_erase(&he->rb_node_in, root_in);
 111                 hist_entry__delete(he);
 112         }
 113 }
 114
 115 typedef int (*test_fn_t)(struct perf_evsel *, struct machine *);
 116
 117 #define COMM(he)  (thread__comm_str(he->thread))
 118 #define DSO(he)   (he->ms.map->dso->short_name)
 119 #define SYM(he)   (he->ms.sym->name)
 120 #define CPU(he)   (he->cpu)
 121 #define PID(he)   (he->thread->tid)
 122
 123 /* default sort keys (no field) */
 124 static int test1(struct perf_evsel *evsel, struct machine *machine)
 125 {
 126         int err;
 127         struct hists *hists = evsel__hists(evsel);
 128         struct hist_entry *he;
 129         struct rb_root *root;
 130         struct rb_node *node;
 131
 132         field_order = NULL;
 133         sort_order = NULL; /* equivalent to sort_order = "comm,dso,sym" */
 134
 135         setup_sorting();
 136
 137         /*
 138          * expected output:
 139          *
 140          * Overhead  Command  Shared Object          Symbol
 141          * ========  =======  =============  ==============
 142          *   20.00%     perf  perf           [.] main
 143          *   10.00%     bash  [kernel]       [k] page_fault
 144          *   10.00%     bash  bash           [.] main
 145          *   10.00%     bash  bash           [.] xmalloc
 146          *   10.00%     perf  [kernel]       [k] page_fault
 147          *   10.00%     perf  [kernel]       [k] schedule
 148          *   10.00%     perf  libc           [.] free
 149          *   10.00%     perf  libc           [.] malloc
 150          *   10.00%     perf  perf           [.] cmd_record
 151          */
 152         err = add_hist_entries(hists, machine);
 153         if (err < 0)
 154                 goto out;
 155
 156         hists__collapse_resort(hists, NULL);
 157         hists__output_resort(hists, NULL);
 158
 159         if (verbose > 2) {
 160                 pr_info("[fields = %s, sort = %s]\n", field_order, sort_order);
 161                 print_hists_out(hists);
 162         }
 163
 164         root = &hists->entries;
 165         node = rb_first(root);
 166         he = rb_entry(node, struct hist_entry, rb_node);
 167         TEST_ASSERT_VAL("Invalid hist entry",
 168                         !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "perf") &&
 169                         !strcmp(SYM(he), "main") && he->stat.period == 200);
 170
 171         node = rb_next(node);
 172         he = rb_entry(node, struct hist_entry, rb_node);
 173         TEST_ASSERT_VAL("Invalid hist entry",
 174                         !strcmp(COMM(he), "bash") && !strcmp(DSO(he), "[kernel]") &&
 175                         !strcmp(SYM(he), "page_fault") && he->stat.period == 100);
 176
 177         node = rb_next(node);
 178         he = rb_entry(node, struct hist_entry, rb_node);
 179         TEST_ASSERT_VAL("Invalid hist entry",
 180                         !strcmp(COMM(he), "bash") && !strcmp(DSO(he), "bash") &&
 181                         !strcmp(SYM(he), "main") && he->stat.period == 100);
 182
 183         node = rb_next(node);
 184         he = rb_entry(node, struct hist_entry, rb_node);
 185         TEST_ASSERT_VAL("Invalid hist entry",
 186                         !strcmp(COMM(he), "bash") && !strcmp(DSO(he), "bash") &&
 187                         !strcmp(SYM(he), "xmalloc") && he->stat.period == 100);
 188
 189         node = rb_next(node);
 190         he = rb_entry(node, struct hist_entry, rb_node);
 191         TEST_ASSERT_VAL("Invalid hist entry",
 192                         !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "[kernel]") &&
 193                         !strcmp(SYM(he), "page_fault") && he->stat.period == 100);
 194
 195         node = rb_next(node);
 196         he = rb_entry(node, struct hist_entry, rb_node);
 197         TEST_ASSERT_VAL("Invalid hist entry",
 198                         !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "[kernel]") &&
 199                         !strcmp(SYM(he), "schedule") && he->stat.period == 100);
 200
 201         node = rb_next(node);
 202         he = rb_entry(node, struct hist_entry, rb_node);
 203         TEST_ASSERT_VAL("Invalid hist entry",
 204                         !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "libc") &&
 205                         !strcmp(SYM(he), "free") && he->stat.period == 100);
 206
 207         node = rb_next(node);
 208         he = rb_entry(node, struct hist_entry, rb_node);
 209         TEST_ASSERT_VAL("Invalid hist entry",
 210                         !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "libc") &&
 211                         !strcmp(SYM(he), "malloc") && he->stat.period == 100);
 212
 213         node = rb_next(node);
 214         he = rb_entry(node, struct hist_entry, rb_node);
 215         TEST_ASSERT_VAL("Invalid hist entry",
 216                         !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "perf") &&
 217                         !strcmp(SYM(he), "cmd_record") && he->stat.period == 100);
 218
 219 out:
 220         del_hist_entries(hists);
 221         reset_output_field();
 222         return err;
 223 }
 224
 225 /* mixed fields and sort keys */
 226 static int test2(struct perf_evsel *evsel, struct machine *machine)
 227 {
 228         int err;
 229         struct hists *hists = evsel__hists(evsel);
 230         struct hist_entry *he;
 231         struct rb_root *root;
 232         struct rb_node *node;
 233
 234         field_order = "overhead,cpu";
 235         sort_order = "pid";
 236
 237         setup_sorting();
 238
 239         /*
 240          * expected output:
 241          *
 242          * Overhead  CPU  Command:  Pid
 243          * ========  ===  =============
 244          *   30.00%    1  perf   :  100
 245          *   10.00%    0  perf   :  100
 246          *   10.00%    2  perf   :  100
 247          *   20.00%    2  perf   :  200
 248          *   10.00%    0  bash   :  300
 249          *   10.00%    1  bash   :  300
 250          *   10.00%    3  bash   :  300
 251          */
 252         err = add_hist_entries(hists, machine);
 253         if (err < 0)
 254                 goto out;
 255
 256         hists__collapse_resort(hists, NULL);
 257         hists__output_resort(hists, NULL);
 258
 259         if (verbose > 2) {
 260                 pr_info("[fields = %s, sort = %s]\n", field_order, sort_order);
 261                 print_hists_out(hists);
 262         }
 263
 264         root = &hists->entries;
 265         node = rb_first(root);
 266         he = rb_entry(node, struct hist_entry, rb_node);
 267         TEST_ASSERT_VAL("Invalid hist entry",
 268                         CPU(he) == 1 && PID(he) == 100 && he->stat.period == 300);
 269
 270         node = rb_next(node);
 271         he = rb_entry(node, struct hist_entry, rb_node);
 272         TEST_ASSERT_VAL("Invalid hist entry",
 273                         CPU(he) == 0 && PID(he) == 100 && he->stat.period == 100);
 274
 275 out:
 276         del_hist_entries(hists);
 277         reset_output_field();
 278         return err;
 279 }
 280
 281 /* fields only (no sort key) */
 282 static int test3(struct perf_evsel *evsel, struct machine *machine)
 283 {
 284         int err;
 285         struct hists *hists = evsel__hists(evsel);
 286         struct hist_entry *he;
 287         struct rb_root *root;
 288         struct rb_node *node;
 289
 290         field_order = "comm,overhead,dso";
 291         sort_order = NULL;
 292
 293         setup_sorting();
 294
 295         /*
 296          * expected output:
 297          *
 298          * Command  Overhead  Shared Object
 299          * =======  ========  =============
 300          *    bash    20.00%  bash
 301          *    bash    10.00%  [kernel]
 302          *    perf    30.00%  perf
 303          *    perf    20.00%  [kernel]
 304          *    perf    20.00%  libc
 305          */
 306         err = add_hist_entries(hists, machine);
 307         if (err < 0)
 308                 goto out;
 309
 310         hists__collapse_resort(hists, NULL);
 311         hists__output_resort(hists, NULL);
 312
 313         if (verbose > 2) {
 314                 pr_info("[fields = %s, sort = %s]\n", field_order, sort_order);
 315                 print_hists_out(hists);
 316         }
 317
 318         root = &hists->entries;
 319         node = rb_first(root);
 320         he = rb_entry(node, struct hist_entry, rb_node);
 321         TEST_ASSERT_VAL("Invalid hist entry",
 322                         !strcmp(COMM(he), "bash") && !strcmp(DSO(he), "bash") &&
 323                         he->stat.period == 200);
 324
 325         node = rb_next(node);
 326         he = rb_entry(node, struct hist_entry, rb_node);
 327         TEST_ASSERT_VAL("Invalid hist entry",
 328                         !strcmp(COMM(he), "bash") && !strcmp(DSO(he), "[kernel]") &&
 329                         he->stat.period == 100);
 330
 331         node = rb_next(node);
 332         he = rb_entry(node, struct hist_entry, rb_node);
 333         TEST_ASSERT_VAL("Invalid hist entry",
 334                         !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "perf") &&
 335                         he->stat.period == 300);
 336
 337         node = rb_next(node);
 338         he = rb_entry(node, struct hist_entry, rb_node);
 339         TEST_ASSERT_VAL("Invalid hist entry",
 340                         !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "[kernel]") &&
 341                         he->stat.period == 200);
 342
 343         node = rb_next(node);
 344         he = rb_entry(node, struct hist_entry, rb_node);
 345         TEST_ASSERT_VAL("Invalid hist entry",
 346                         !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "libc") &&
 347                         he->stat.period == 200);
 348
 349 out:
 350         del_hist_entries(hists);
 351         reset_output_field();
 352         return err;
 353 }
 354
 355 /* handle duplicate 'dso' field */
 356 static int test4(struct perf_evsel *evsel, struct machine *machine)
 357 {
 358         int err;
 359         struct hists *hists = evsel__hists(evsel);
 360         struct hist_entry *he;
 361         struct rb_root *root;
 362         struct rb_node *node;
 363
 364         field_order = "dso,sym,comm,overhead,dso";
 365         sort_order = "sym";
 366
 367         setup_sorting();
 368
 369         /*
 370          * expected output:
 371          *
 372          * Shared Object          Symbol  Command  Overhead
 373          * =============  ==============  =======  ========
 374          *          perf  [.] cmd_record     perf    10.00%
 375          *          libc  [.] free           perf    10.00%
 376          *          bash  [.] main           bash    10.00%
 377          *          perf  [.] main           perf    20.00%
 378          *          libc  [.] malloc         perf    10.00%
 379          *      [kernel]  [k] page_fault     bash    10.00%
 380          *      [kernel]  [k] page_fault     perf    10.00%
 381          *      [kernel]  [k] schedule       perf    10.00%
 382          *          bash  [.] xmalloc        bash    10.00%
 383          */
 384         err = add_hist_entries(hists, machine);
 385         if (err < 0)
 386                 goto out;
 387
 388         hists__collapse_resort(hists, NULL);
 389         hists__output_resort(hists, NULL);
 390
 391         if (verbose > 2) {
 392                 pr_info("[fields = %s, sort = %s]\n", field_order, sort_order);
 393                 print_hists_out(hists);
 394         }
 395
 396         root = &hists->entries;
 397         node = rb_first(root);
 398         he = rb_entry(node, struct hist_entry, rb_node);
 399         TEST_ASSERT_VAL("Invalid hist entry",
 400                         !strcmp(DSO(he), "perf") && !strcmp(SYM(he), "cmd_record") &&
 401                         !strcmp(COMM(he), "perf") && he->stat.period == 100);
 402
 403         node = rb_next(node);
 404         he = rb_entry(node, struct hist_entry, rb_node);
 405         TEST_ASSERT_VAL("Invalid hist entry",
 406                         !strcmp(DSO(he), "libc") && !strcmp(SYM(he), "free") &&
 407                         !strcmp(COMM(he), "perf") && he->stat.period == 100);
 408
 409         node = rb_next(node);
 410         he = rb_entry(node, struct hist_entry, rb_node);
 411         TEST_ASSERT_VAL("Invalid hist entry",
 412                         !strcmp(DSO(he), "bash") && !strcmp(SYM(he), "main") &&
 413                         !strcmp(COMM(he), "bash") && he->stat.period == 100);
 414
 415         node = rb_next(node);
 416         he = rb_entry(node, struct hist_entry, rb_node);
 417         TEST_ASSERT_VAL("Invalid hist entry",
 418                         !strcmp(DSO(he), "perf") && !strcmp(SYM(he), "main") &&
 419                         !strcmp(COMM(he), "perf") && he->stat.period == 200);
 420
 421         node = rb_next(node);
 422         he = rb_entry(node, struct hist_entry, rb_node);
 423         TEST_ASSERT_VAL("Invalid hist entry",
 424                         !strcmp(DSO(he), "libc") && !strcmp(SYM(he), "malloc") &&
 425                         !strcmp(COMM(he), "perf") && he->stat.period == 100);
 426
 427         node = rb_next(node);
 428         he = rb_entry(node, struct hist_entry, rb_node);
 429         TEST_ASSERT_VAL("Invalid hist entry",
 430                         !strcmp(DSO(he), "[kernel]") && !strcmp(SYM(he), "page_fault") &&
 431                         !strcmp(COMM(he), "bash") && he->stat.period == 100);
 432
 433         node = rb_next(node);
 434         he = rb_entry(node, struct hist_entry, rb_node);
 435         TEST_ASSERT_VAL("Invalid hist entry",
 436                         !strcmp(DSO(he), "[kernel]") && !strcmp(SYM(he), "page_fault") &&
 437                         !strcmp(COMM(he), "perf") && he->stat.period == 100);
 438
 439         node = rb_next(node);
 440         he = rb_entry(node, struct hist_entry, rb_node);
 441         TEST_ASSERT_VAL("Invalid hist entry",
 442                         !strcmp(DSO(he), "[kernel]") && !strcmp(SYM(he), "schedule") &&
 443                         !strcmp(COMM(he), "perf") && he->stat.period == 100);
 444
 445         node = rb_next(node);
 446         he = rb_entry(node, struct hist_entry, rb_node);
 447         TEST_ASSERT_VAL("Invalid hist entry",
 448                         !strcmp(DSO(he), "bash") && !strcmp(SYM(he), "xmalloc") &&
 449                         !strcmp(COMM(he), "bash") && he->stat.period == 100);
 450
 451 out:
 452         del_hist_entries(hists);
 453         reset_output_field();
 454         return err;
 455 }
 456
 457 /* full sort keys w/o overhead field */
 458 static int test5(struct perf_evsel *evsel, struct machine *machine)
 459 {
 460         int err;
 461         struct hists *hists = evsel__hists(evsel);
 462         struct hist_entry *he;
 463         struct rb_root *root;
 464         struct rb_node *node;
 465
 466         field_order = "cpu,pid,comm,dso,sym";
 467         sort_order = "dso,pid";
 468
 469         setup_sorting();
 470
 471         /*
 472          * expected output:
 473          *
 474          * CPU  Command:  Pid  Command  Shared Object          Symbol
 475          * ===  =============  =======  =============  ==============
 476          *   0     perf:  100     perf       [kernel]  [k] schedule
 477          *   2     perf:  200     perf       [kernel]  [k] page_fault
 478          *   1     bash:  300     bash       [kernel]  [k] page_fault
 479          *   0     bash:  300     bash           bash  [.] xmalloc
 480          *   3     bash:  300     bash           bash  [.] main
 481          *   1     perf:  100     perf           libc  [.] malloc
 482          *   2     perf:  100     perf           libc  [.] free
 483          *   1     perf:  100     perf           perf  [.] cmd_record
 484          *   1     perf:  100     perf           perf  [.] main
 485          *   2     perf:  200     perf           perf  [.] main
 486          */
 487         err = add_hist_entries(hists, machine);
 488         if (err < 0)
 489                 goto out;
 490
 491         hists__collapse_resort(hists, NULL);
 492         hists__output_resort(hists, NULL);
 493
 494         if (verbose > 2) {
 495                 pr_info("[fields = %s, sort = %s]\n", field_order, sort_order);
 496                 print_hists_out(hists);
 497         }
 498
 499         root = &hists->entries;
 500         node = rb_first(root);
 501         he = rb_entry(node, struct hist_entry, rb_node);
 502
 503         TEST_ASSERT_VAL("Invalid hist entry",
 504                         CPU(he) == 0 && PID(he) == 100 &&
 505                         !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "[kernel]") &&
 506                         !strcmp(SYM(he), "schedule") && he->stat.period == 100);
 507
 508         node = rb_next(node);
 509         he = rb_entry(node, struct hist_entry, rb_node);
 510         TEST_ASSERT_VAL("Invalid hist entry",
 511                         CPU(he) == 2 && PID(he) == 200 &&
 512                         !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "[kernel]") &&
 513                         !strcmp(SYM(he), "page_fault") && he->stat.period == 100);
 514
 515         node = rb_next(node);
 516         he = rb_entry(node, struct hist_entry, rb_node);
 517         TEST_ASSERT_VAL("Invalid hist entry",
 518                         CPU(he) == 1 && PID(he) == 300 &&
 519                         !strcmp(COMM(he), "bash") && !strcmp(DSO(he), "[kernel]") &&
 520                         !strcmp(SYM(he), "page_fault") && he->stat.period == 100);
 521
 522         node = rb_next(node);
 523         he = rb_entry(node, struct hist_entry, rb_node);
 524         TEST_ASSERT_VAL("Invalid hist entry",
 525                         CPU(he) == 0 && PID(he) == 300 &&
 526                         !strcmp(COMM(he), "bash") && !strcmp(DSO(he), "bash") &&
 527                         !strcmp(SYM(he), "xmalloc") && he->stat.period == 100);
 528
 529         node = rb_next(node);
 530         he = rb_entry(node, struct hist_entry, rb_node);
 531         TEST_ASSERT_VAL("Invalid hist entry",
 532                         CPU(he) == 3 && PID(he) == 300 &&
 533                         !strcmp(COMM(he), "bash") && !strcmp(DSO(he), "bash") &&
 534                         !strcmp(SYM(he), "main") && he->stat.period == 100);
 535
 536         node = rb_next(node);
 537         he = rb_entry(node, struct hist_entry, rb_node);
 538         TEST_ASSERT_VAL("Invalid hist entry",
 539                         CPU(he) == 1 && PID(he) == 100 &&
 540                         !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "libc") &&
 541                         !strcmp(SYM(he), "malloc") && he->stat.period == 100);
 542
 543         node = rb_next(node);
 544         he = rb_entry(node, struct hist_entry, rb_node);
 545         TEST_ASSERT_VAL("Invalid hist entry",
 546                         CPU(he) == 2 && PID(he) == 100 &&
 547                         !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "libc") &&
 548                         !strcmp(SYM(he), "free") && he->stat.period == 100);
 549
 550         node = rb_next(node);
 551         he = rb_entry(node, struct hist_entry, rb_node);
 552         TEST_ASSERT_VAL("Invalid hist entry",
 553                         CPU(he) == 1 && PID(he) == 100 &&
 554                         !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "perf") &&
 555                         !strcmp(SYM(he), "cmd_record") && he->stat.period == 100);
 556
 557         node = rb_next(node);
 558         he = rb_entry(node, struct hist_entry, rb_node);
 559         TEST_ASSERT_VAL("Invalid hist entry",
 560                         CPU(he) == 1 && PID(he) == 100 &&
 561                         !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "perf") &&
 562                         !strcmp(SYM(he), "main") && he->stat.period == 100);
 563
 564         node = rb_next(node);
 565         he = rb_entry(node, struct hist_entry, rb_node);
 566         TEST_ASSERT_VAL("Invalid hist entry",
 567                         CPU(he) == 2 && PID(he) == 200 &&
 568                         !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "perf") &&
 569                         !strcmp(SYM(he), "main") && he->stat.period == 100);
 570
 571 out:
 572         del_hist_entries(hists);
 573         reset_output_field();
 574         return err;
 575 }
 576
 577 int test__hists_output(void)
 578 {
 579         int err = TEST_FAIL;
 580         struct machines machines;
 581         struct machine *machine;
 582         struct perf_evsel *evsel;
 583         struct perf_evlist *evlist = perf_evlist__new();
 584         size_t i;
 585         test_fn_t testcases[] = {
 586                 test1,
 587                 test2,
 588                 test3,
 589                 test4,
 590                 test5,
 591         };
 592
 593         TEST_ASSERT_VAL("No memory", evlist);
 594
 595         err = parse_events(evlist, "cpu-clock", NULL);
 596         if (err)
 597                 goto out;
 598
 599         machines__init(&machines);
 600
 601         /* setup threads/dso/map/symbols also */
 602         machine = setup_fake_machine(&machines);
 603         if (!machine)
 604                 goto out;
 605
 606         if (verbose > 1)
 607                 machine__fprintf(machine, stderr);
 608
 609         evsel = perf_evlist__first(evlist);
 610
 611         for (i = 0; i < ARRAY_SIZE(testcases); i++) {
 612                 err = testcases[i](evsel, machine);
 613                 if (err < 0)
 614                         break;
 615         }
 616
 617 out:
 618         /* tear down everything */
 619         perf_evlist__delete(evlist);
 620         machines__exit(&machines);
 621
 622         return err;
 623 }